问题: 
[root@SsHII4LLDY05V ~]# service network restart 
Restarting network (via systemctl):  Job for network.service failed because the control process exited with error code. See "systemctl status network.service" and "journalctl -xe" for details. 
                                                           [FAILED] 
[root@SsHII4LLDY05V ~]# systemctl status network.service 
● network.service - LSB: Bring up/down networking 
   Loaded: loaded (/etc/rc.d/init.d/network; bad; vendor preset: disabled) 
   Active: failed (Result: exit-code) since Wed 2021-08-25 13:21:57 CST; 30s ago 
     Docs: man:systemd-sysv-generator(8) 
  Process: 2689 ExecStart=/etc/rc.d/init.d/network start (code=exited, status=1/FAILURE) 
 
Aug 25 13:21:56 SsHII4LLDY05V network[2689]: RTNETLINK answers: File exists 
Aug 25 13:21:56 SsHII4LLDY05V network[2689]: RTNETLINK answers: File exists 
Aug 25 13:21:57 SsHII4LLDY05V network[2689]: RTNETLINK answers: File exists 
Aug 25 13:21:57 SsHII4LLDY05V network[2689]: RTNETLINK answers: File exists 
Aug 25 13:21:57 SsHII4LLDY05V network[2689]: RTNETLINK answers: File exists 
Aug 25 13:21:57 SsHII4LLDY05V network[2689]: RTNETLINK answers: File exists 
Aug 25 13:21:57 SsHII4LLDY05V systemd[1]: network.service: control process exited, code=exited status=1 
Aug 25 13:21:57 SsHII4LLDY05V systemd[1]: Failed to start LSB: Bring up/down networking. 
Aug 25 13:21:57 SsHII4LLDY05V systemd[1]: Unit network.service entered failed state. 
Aug 25 13:21:57 SsHII4LLDY05V systemd[1]: network.service failed. 
 
解决: 
禁用NetworkManager 
1、systemctl stop NetworkManager 
2、systemctl disable NetworkManager |